Submission

Score: 100

User: pann

Problemset: อนุกรม

Language: cpp

Time: 0.005 second

Submitted On: 2026-10-02 06:13:01

#include <iostream>
using namespace std;

int main(){
    int n;
    cin >> n;
    long long first = 0, second = 1, next;
    for (int i = 2; i <= n; i++){
        next = first + second;
        first = second;
        second = next;
    }
    cout << next;
    return 0;
}